Republicans in the House are proposing sweeping corporate tax reform . Their proposals would effectively repeal the corporate income tax, currently levied at a 35 percent rate, and replace it with a new “destination-based cash-flow tax (DBCFT)” at a 20 percent rate for corporations and 25 percent for unincorporated businesses. The new tax would be border-adjustable – taxing imports and exempting exports.

Just about everyone wants to redesign the corporate tax, but there is little agreement among lawmakers or policy analysts on how to pay for such a reform. At a Senate Finance Committee hearing today , Tax Policy Center co-director Eric Toder urged lawmakers to think beyond the traditional cut-the-rates, broaden-the-base solution.

Senator Marco Rubio would convert the income tax into a progressive consumption tax, an ambitious idea that would eliminate the income tax’s penalty on saving. However, a new Tax Policy Center analysis finds that Rubio’s version would slash federal tax revenues by $6.8 trillion over the next decade